. >> hillary clinton formally resigning as the 67th secretary of state, expressing her pride while speaking to fellow state department employees on her final day. >> i'm proud of the work we have done to elevate diplomacy and development, to serve the nation we all love. >> clinton making history as the most traveled secretary of state by visiting 112 countries, traveling almost 1 million miles, and holding 1,700 meetings with world leaders. former massachusetts senator john kerry taking over as the new secretary of state. [ indistinct shouting ] >> baltimore ravens fans celebrating their big super bowl win, filling the streets after their team's 34-31 defeat over the san francisco 49ers. the win, which at first, seemed a lock with an earlier 28-6 lead, almost slipping out of the ravens' hands after a bizarre power outage plunged part of the stadium into darkness and slowed their winning momentum. but in the end, the team holding on for its big win. malala yousufzai, a 15-year-old pakistani girl shot by the taliban, telling the world she is recovering after undergoing successful operations